Heljarinnar breytingar til þess að laga nokkra hluti í part 1.

include/digital_in.h

@@ -4,19 +4,28 @@
 #include <stdint.h>
 #include <zephyr/drivers/gpio.h>
 
-struct Digital_in {
+class Digital_in {
+public:
     enum : uint8_t {
         ENCODER_C1 = 0,
         ENCODER_C2 = 1
     };
 
-    const struct gpio_dt_spec *gpio;
-
     explicit Digital_in(uint8_t pin_id);
 
     void init();
     bool is_hi();
     bool is_lo();
+
+    // Calls handler on every rising edge of the pin. The caller owns the
+    // gpio_callback struct so it can find its own object with CONTAINER_OF.
+    // Returns 0 on success, or a negative Zephyr error code.
+    int enable_rising_edge_interrupt(
+        struct gpio_callback *callback,
+        gpio_callback_handler_t handler);
+
+private:
+    const struct gpio_dt_spec *gpio;
 };
 
-#endif
+#endif